Zobrazeno 1 - 10
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pro vyhledávání: '"Peters, Robert"'
Extensive investigation has recently been conducted into a new class of antiferromagnetic order known as magnetic octupole order. This order may be concealed due to its higher-rank multipole, making it difficult to detect and manipulate it by using c
Externí odkaz:
http://arxiv.org/abs/2407.15836
Autor:
Peters, Robert, Yoshida, Tsuneya
Publikováno v:
Phys. Rev. B 110, 125114 (2024)
Non-Hermitian systems exhibit novel phenomena without Hermitian counterparts, such as exceptional points and the non-Hermitian skin effect. These non-Hermitian topological phenomena are observable in single-particle excitations of correlated systems
Externí odkaz:
http://arxiv.org/abs/2406.07827
Autor:
Ōiké, Jun, Peters, Robert
Nonlinear spintronics, which combines nonlinear dynamics and spintronics, opens a new route for controlling spins and spin dynamics beyond conventional spintronics based on linear responses. Strongly correlated electron systems, which can have large
Externí odkaz:
http://arxiv.org/abs/2403.17189
We study the dynamics of quantum skyrmions under a magnetic field gradient using neural network quantum states. First, we obtain a quantum skyrmion lattice ground state using variational Monte Carlo with a restricted Boltzmann machine as the variatio
Externí odkaz:
http://arxiv.org/abs/2403.08184
Autor:
Shinada, Koki, Peters, Robert
Publikováno v:
Phys. Rev. B 110, 085162 (2024)
We present the optical activity induced by the orbital magnetic moment in metals and superconductors using Green's function formalization. We show that an apparent singularity of the optical activity vanishes in the normal state; however, it remains
Externí odkaz:
http://arxiv.org/abs/2402.06175
Autor:
Kofuji, Akira, Peters, Robert
Nonlinear responses in crystalline solids are attracting a great deal of attention because of exciting phenomena, such as the bulk photovoltaic effect in noncentrosymmetric crystals and the third harmonic generation related to Higgs modes in supercon
Externí odkaz:
http://arxiv.org/abs/2312.09668
Autor:
Shinada, Koki, Peters, Robert
Publikováno v:
Phys. Rev. B 108, 165119 (2023)
We present general properties of the optical activity in noncentrosymmetric materials, including superconductors. We derive a sum rule of the optical activity in general electric states and show that the summation of the spectrum is zero, which is in
Externí odkaz:
http://arxiv.org/abs/2308.01786